do not touch case-insensitive

mathiasbynens · Jan 18, 2023 · 967ac02 · 967ac02
1 parent d9a6a1f
commit 967ac02
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/punycode.js b/punycode.js
@@ -14,7 +14,7 @@ const initialN = 128; // 0x80
 const delimiter = '-'; // '\x2D'
 
 /** Regular expressions */
-const regexPunycode = /^xn--/;
+const regexPunycode = /^xn--/i;
 const regexNonASCII = /[^\0-\x7F]/; // Note: U+007F DEL is excluded too.
 const regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g; // RFC 3490 separators
 
@@ -389,7 +389,7 @@ const encode = function(input) {
 const toUnicode = function(input) {
 	return mapDomain(input, function(string) {
 		return regexPunycode.test(string)
-			? decode(string.slice(4).toLowerCase())
+			? decode(string.slice(4))
 			: string;
 	});
 };